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Academia/Industry Working Conference on Research Challenges, AIWORC 2000

作者： Rakotonirainy, A. Loke, Seng Wai Zaslavsky, A. CRC for Distributed Systems Technology University of Queensland Level 7 General Purpose QLD4072 Australia CRC for Distributed Systems Technology Monash University Australia School of Computer Science and Software Engineering Monash University CaulfieldVIC3145 Australia

ISBN: (纸本)0769506283

The RM-ODP Enterprise Language comprises concepts, rules and structures for the specification of a community, where a community comprises objects (human, software, or combinations thereof) formed to meet an objective. The Enterprise Language focuses on the purpose, scope and policies of the community, where an enterprise policy is a set of rules with a particular objective related to the community's purpose described as obligations, prohibitions, and permissions. In order to enable adaptations of the enterprise's objectives, structure, policies and roles, we are designing a conceptual architecture with a process-oriented view of roles and policy adaptation mechanisms. Mobile enterprise objects interact with the rest of the community via processes called role-proxies. © 2000 IEEE.

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An adaptive early-detection ML/PDA estimator for LO targets with EO sensors

An adaptive early-detection ML/PDA estimator for LO targets ...

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IEEE Conference on Aerospace

作者： M.R. Chummun T. Kirubarajan Y. Bar-Shalom Advanced Technology and Software Operations Motorola Corporation Harvard IL USA Electrical and Systems Engineering Department University of Connecticut Storrs CT USA

The batch Maximum Likelihood Estimator, combined with the Probabilistic Data Association Algorithm (ML-PDA), has been shown to be effective in acquiring low observable (LO)-low SNR-non-maneuvering targets in the presence of heavy clutter. The use of signal strength or amplitude information (AI) in the ML-PDA estimator facilitates the acquisition of weak targets. In this paper we present an adaptive algorithm, which uses the ML-PDA estimator with Al in a sliding-window fashion, to detect high-speed targets in heavy clutter using electro-optical (EO) sensors. The initial time and the length of the sliding-window are adjusted adaptively according to the information content of the received measurements. A track validation scheme via hypothesis testing is developed to confirm the estimated track, that is, the presence of a target, in each window. The sliding-window ML-PDA approach, together with track validation, enables early detection by rejecting noninformative scans, target reacquisition in case of temporary target disappearance and the handling of targets with speeds evolving over time. The proposed algorithm is shown to detect the target, which is hidden in as many as 600 false alarms per scan, 10 frames earlier than the Multiple Hypothesis Tracking (MHT) algorithm.

关键词： Maximum likelihood estimation Target tracking Electrooptic effects Maximum likelihood detection Artificial intelligence Amplitude estimation Adaptive algorithm Electrooptic devices Length measurement Time measurement

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Finding faces in wavelet domain for content-based coding of color images 25

Finding faces in wavelet domain for content-based coding of ...

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25th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2000

作者： Karlekar, Jayashree Desai, U.B. Hughes Software Systems Ltd. Electronic City Plot 31 Sector 18 Gurgaon122 015 India Dept. of Electrical Engineering Indian Institute of Technology Powai Mumbai400 076 India

ISBN: (纸本)0780362934

Human face images form the important database in poliee departments, banks, security kiosks, and they are also found in abundance in day-to-day lite. In these databases the important content, of course, is the face region. In this paper, we present a highly efficient system that detects the human faces in the wavelet transform for discriminative quantization to achieve high perceptual quality content-based image coding technique. The proposed method gives superior subjective performance over JPEG without sacrificing the performance in the rate-distortion spectrum. © 2000 IEEE.

关键词： Image coding

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Performance evaluation of line drawing recognition systems

Performance evaluation of line drawing recognition systems

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International Conference on Pattern Recognition

作者： A.K. Chhabra I.T. Phillips Bell Atlantic Network Systems Advanced Technology White Plains NY USA Computer Science Software Engineering Department Seattle University Seattle WA USA

ISBN: (纸本)0769507506

Presents the results of the third international graphics recognition contest. We evaluated the performance of four different vectorization systems on scanned images of CAD drawings. The EditCost Index was used for comparative evaluation of the systems. The performance curves of the systems on the test images are presented in this paper.

关键词： engineering drawings System testing Image recognition Image converters Computer graphics Image generation Computer science software engineering Time measurement Noise generators

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Nimrod/G: An architecture for a resource management and scheduling system in a global computational grid 4

Nimrod/G: An architecture for a resource management and sche...

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4th International Conference/Exhibition on High Performance Computing in the Asia-Pacific Region, HPC-Asia 2000

作者： Buyya, R. Abramson, D. Giddy, J. School of Computer Science and Software Engineering Monash University Caulfield Campus MelbourneVIC Australia CRC for Enterprise Distributed Systems Technology University of Queensland St. Lucia General Purpose South Building BrisbaneQLD Australia

ISBN: (纸本)0769505902

The availability of powerful microprocessors and high-speed networks as commodity components has enabled high-performance computing on distributed systems (wide-area cluster computing). In this environment, as the resources are usually distributed geographically at various levels (department, enterprise or worldwide), there is a great challenge in integrating, coordinating and presenting them as a single resource to the user, thus forming a computational grid. Another challenge comes from the distributed ownership of resources, with each resource having its own access policy, cost and mechanism. The proposed Nimrod/G grid-enabled resource management and scheduling system builds on our earlier work on Nimrod (D. Abramson et al., 1994, 1995, 1997, 2000) and follows a modular and component-based architecture enabling extensibility, portability, ease of development, and interoperability of independently developed components. It uses the GUSTO (GlobUS TOolkit) services and can be easily extended to operate with any other emerging grid middleware services. It focuses on the management and scheduling of computations over dynamic resources scattered geographically across the Internet at department, enterprise or global levels, with particular emphasis on developing scheduling schemes based on the concept of computational economy for a real testbed, namely the Globus testbed (GUSTO). © 2000 IEEE.

关键词： Testbeds

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Evaluating modeling efficiency of a specific software architecture

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systems and Computers in Japan 2000年第11期31卷 1-11页

作者： Kawakami, Masumi Yoshida, Atsushi Isoda, Sadahiro Knowledge-Based Info. Engineering Toyohashi University of Technology Toyohashi 441-8580 Japan Systems Development Laboratory Hitachi Ltd. Toyohashi University of Technology Wakayama University Nagoya University University of Tokyo Department of Computer Science University of Illinois Urbana IL United States Spec. Interest Grp. on Software Eng. Info. Processing Society of Japan

software architectural styles that represent structural characteristics of software programs range from specific ones that can be applied to a particular domain to generic ones that can be applied to any domain. If a specific architectural style is available for the target system to be developed, it is appropriate to apply it together with its associated modeling method. However, no quantitative evaluation on the efficiency of specific architectural styles has as yet been reported. This paper presents a quantitative comparison of two architectural styles: specific and generic software architectural styles. The comparison shows that a specific architectural style combined with its associated modeling method allows us to reduce modeling cost as much as a few scores of percent compared with the generic one combined with its modeling method. The improvement results from the characteristics that (1) a specific software architectural style requires less rewriting of modeling diagrams due to its inherent basic structure and (2) there is less redundant information among modeling diagrams.

关键词： Client server computer systems

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Analyzing requirements engineering processes: a case study

Analyzing requirements engineering processes: a case study

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International Workshop on Database and Expert systems Applications

作者： F. Houdek K. Pohl Research and Technology Daimler Chrysler Aerospace Ulm Germany Software Systems Engineering University of Essen Essen Germany

Thorough process improvement starts with an analysis of the current situation. This is also true for requirements engineering processes. The goal of cooperation between DaimlerChrysler and the department of software systems engineering at the University of Essen is to establish a framework for such RE process analysis in the area of car manufacturing. In this paper, we report on our first analysis using a traditional interview technique and the results obtained. We compare the major findings with existing research and other experiences, identify a set of challenges and provide an outlook of our future investigations.

关键词： Computer aided software engineering software systems Instruments systems engineering and theory Total quality management Manufacturing processes Time to market Ambient intelligence Programming Control systems

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Introducing domain knowledge for selection of active factors in designed experiments

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International Journal of Reliability, Quality and Safety engineering 2000年第4期7卷 341-356页

作者： Ekdahl, Fredrik Persson, Per Wiklund, Pia Sandvik Software Engineering Systems Engineering Department ABB Corporate Research SE-721 78 Västerås Sweden Division of Quality Technology and Management Linköping University SE-581 83 Linköping Sweden Division of Quality Technology and Statistics Luleå University of Technology SE-971 87 Luleå Sweden Mid Sweden University SE-831 25 Östersund Sweden

Unreplicated factorial designs are widely used for designed experimentation in industry. In the analysis of designed experiments, the experimental factors influencing the response must be identified and separated from those that do not. An abundance of procedures intended to perform this selection have been introduced in the literature. A recent study indicated that the procedure due to Box and Meyer outperforms the lot of the other selection procedures in terms of efficiency and robustness. The procedure of Box and Meyer rests on a quasi-Bayesian foundation and utilizes generic domain knowledge, in the form of a common-for-all-factors a priori probability, that a factor significantly influences the response, to calculate an a posteriori probability for each factor. This paper suggests a strategy for introducing more elaborate domain knowledge about the experimental factors in the procedure of Box and Meyer, aiming to further improve its performance. © World Scientific Publishing Company.

关键词： Bayesian Inference Design of Experiments Selection Procedures Unreplicated Factorials

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Finding faces in wavelet domain for content-based coding of color images

Finding faces in wavelet domain for content-based coding of ...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： J. Karlekar U.B. Desai Hughes Software Systems Limited Gurgaon India Department of Electrical Engineering Indian Institute of Technology Mumbai India

Human face images form the important database in police departments, banks, security kiosks, and they are also found in abundance in day-to-day life. In these databases the important content, of course, is the face region. We present a highly efficient system that detects the human faces in the wavelet transform for discriminative quantization to achieve high perceptual quality content-based image coding technique. The proposed method gives superior subjective performance over JPEG without sacrificing the performance in the rate-distortion spectrum.

关键词： Wavelet domain Image coding Color Face detection Image databases Wavelet transforms Video compression Feature extraction Data security Rate-distortion

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Location-based personal agents: a metaphor for situated computing

Location-based personal agents: a metaphor for situated comp...

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International Conference on Parallel Processing Workshops (ICPPW)

作者： Seng Wai Loke A. Rakotonirainy K. Schulz CRC for Distributed Systems Technology School of Computer Science and Software Engineering Monash University Caulfield VIC Australia CRC for Distributed Systems Technology University of Queensland Australia

This paper proposes an agent-based model for providing personalized services at specific locations. We describe the concept of LBP (location-based personal) agents, point out the benefits of the model and examine impl... 详细信息

关键词： Wearable computers Cyclic redundancy check Australia Intelligent sensors Mobile computing Switches Distributed computing Computer science software engineering Multiagent systems

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